
11
JTS8388B
2104A–BDC–09/03
Functions Description
Name
Function
V
CC
Positive power supply
V
EE
Analog negative power supply
V
PLUSD
Digital positive power supply
GND
Ground
VIN, VINB
Differential analog inputs
CLK, CLKB
Differential clock inputs
<D0:D7>
<D0B:D7B>
Differential output data port
DR; DRB
Differential data ready outputs
OR; ORB
Out-of-range outputs
GAIN
ADC gain adjust
GORB
Gray or binary digital output select
DIOD/DRRB
Die junction temp. measurement/
asynchronous data ready reset
Table 3.
Digital Coding
NRZ (Non Return to Zero) mode, ideal coding: does not include gain, offset, and linearity voltage errors.
Differential
Analog Input
Voltage Level
Digital Output
Out of Range
Binary
GORB = V
CC
or floating
Gray
GORB = GND
> 251 mV
> Positive full-scale + 1/2 LSB
1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 0
1
251 mV
249 mV
Positive full-scale + 1/2 LSB
Positive full-scale - 1/2 LSB
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 0
1 0 0 0 0 0 0 0
1 0 0 0 0 0 0 1
0
0
126 mV
124 mV
Positive 1/2 scale + 1/2 LSB
Positive1/2 scale - 1/2 LSB
1 1 0 0 0 0 0 0
1 0 1 1 1 1 1 1
1 0 1 0 0 0 0 0
1 1 1 0 0 0 0 0
0
0
1 mV
-1 mV
Bipolar zero + 1/2 LSB
Bipolar zero - 1/2 LSB
1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1
1 1 0 0 0 0 0 0
0 1 0 0 0 0 0 0
0
0
-124 mV
-126 mV
Negative 1/2 scale + 1/2 LSB
Negative 1/2 scale - 1/2 LSB
0 1 0 0 0 0 0 0
0 0 1 1 1 1 1 1
0 1 1 0 0 0 0 0
0 0 1 0 0 0 0 0
0
0
-249 mV
-251 mV
Negative full-scale + 1/2 LSB
Negative full-scale - 1/2 LSB
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
0
0
< -251 mV
< Negative full-scale - 1/2 LSB
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1
VPLUSD = 0 V (ECL)
VPLUSD= 2.4 V (LVDS)
VCC =
5 V
VIN
ORB
OR
VINB
CLK
D0
D0B
D7
CLKB
GAIN
D7B
16
JTS8388B
DR
GORB
DIOD/
DRRB
DRB
VEE= -5 V GND
DVEE= -5 V